Service engine came on and these three errors came up on my OBDII reader. A day later the car would not start. Now I brought it into japanese import auto shop, and said that these problems might not relate to engine not starting. The mechanic said that the fuel pump might need to replace. Are there are correlation between these three errors and engine not starting? If there isn't, will replacing the fuel pump get my car running again?

Tuned it up lately? not really but It's a 2001 4.4i w/ AFE intake and Tech9 cpu chip. I did the chip last summer, and then installed the intake last winter.

Did you recently oil your air cleaner? Did you check to see if excess oil fouled up the MAF? If not, check to see if all the seals from the intake to the back of the MAF are completely sealed and tightened. Good luck.

It's at 120k km. Don't think the spark plug has ever been changed. The air filter has not been changed so it might not be excessive oil blocking the sensor. I don't know what a seperator does but here's the driving experience prior to engine failure. Maybe once every two weeks the auto-cranker takes a tad longer to start the engine. Right before the engine failure, the engine would start and everything seems fine, then I drive it for a bit, engine wouldn't take my gas and sometimes would even make a pop/air sound. I didn't even dare to drive it on the highway. At times, it starts for two seconds and engine would shutdown itself.

It's at 120k km. Don't think the spark plug has ever been changed. The air filter has not been changed so it might not be excessive oil blocking the sensor. I don't know what a seperator does but here's the driving experience prior to engine failure. Maybe once every two weeks the auto-cranker takes a tad longer to start the engine. Right before the engine failure, the engine would start and everything seems fine, then I drive it for a bit, engine wouldn't take my gas and sometimes would even make a pop/air sound. I didn't even dare to drive it on the highway. At times, it starts for two seconds and engine would shutdown itself.

this is all i can recall for now.

You might have mentioned this in the beginning.

Hard starting, shutting down (presumably due to failure to maintain fuel pressure) and no accelleration when you put your foot down are all signs that a pump could be going out. The computer probably shuts down at a certain fuel psi to avoid blowing up the engine.